Key to the intellectual problem is the fact that males often do no investing into the offspring. While sexual mothers need to produce both sons and daughters, an asexual female can make daughters alone. If females are the investing sex (they make eggs, feed the young etc), this makes it ...
Nitrogen is a component of proteins, nucleic acids, and other organic compounds. It is used to make amino acids in our body which in turn make proteins. It is also needed to make nucleic acids, which form DNA and RNA. Human or other species on earth require nitrogen ina 'fixed' reactive...
Smoke from wildfires containsthousands of individual compounds, including carbon monoxide, volatile organic compounds (VOCs), carbon dioxide, hydrocarbons and nitrogen oxides. The most prevalent pollutant by mass is particulate matter less than 2.5 micrometers in diameter, roughly 50 times smaller than a...
It is my experience is that the use of nasal oxygen, although completely correct in itself, seems to be associated with ignorance of the fact that the sufferer is probably lacking the vitamins and minerals that enable the oxygen to be utilized in the body. Indeed, the lack of vitamins and ...
Is the greenhouse effect good or bad? What does water vapor do in the greenhouse effect? Why is reforestation important? How much does the greenhouse effect raise temperatures on Earth? Why is methane such a potent greenhouse gas? Why is nitrogen not a greenhouse gas?
aNITROGEN GENERATION PACKAGE (SKID) 氮气世代包裹(滑行)[translate] a信号检测与数字控制技术 Signal examination and numerical control technology[translate] a把生活打理得井井有条 Handles in good order the life[translate] aI take part in three research projects 我参与在三个研究计划[translate] ...
You couldn’t be here if stars hadn’t exploded, because the elements – the carbon, nitrogen, oxygen, iron, all the things that matter for evolution and for life – weren’t created at the beginning of time. They were created in the nuclear furnaces of stars, and the only way for ...
a特定苯并三氮唑 Specific benzene and three nitrogen zuo[translate] aChasin' You (Prod. By Brian Ke 正在翻译,请等待... [translate] a我英语很差,改说中文行吗? My English is very bad, changes speaks Chinese?[translate] a我想让我爸在我生日那天给我买台数码相机 I want to let my father tha...
Yellow leaves fall on their own –With a nitrogen deficiency, yellow leaves feel soft and are easily pulled off (in fact they usually fall on their own). If a leaf feels very stiff or is hard to pull out, that means it is not a Nitrogen deficiency and actually something else. How Do...
Why is nitrogen a gas at room temperature and carbon is a solid? Why doesn't Sun attract Earth towards it? Why are arc sources often blanketed with a stream of an inert gas? Why is ammonia important to plants? What are the chemicals that cause ozone d...